According to the Vikings Blog, Percy Harvin has been named to the team after they realized the roster would be short without a designated kick returner. Although the game matters little, the honor is what really counts, especially in a league where fan Voting only makes up a third of the decision.
Harvin ran two kicks back for TDs this year as a rookie, and averaged over 27 yards per return. It is second all time for the Vikings, and I expect him to be quite dangerous in that fashion for the playoffs. He is the only offensive skill player rookie to be named to the rosters this year, though im sure more will come as the rosters thin out due to so many players turning down their invites.
Hopefully he wont have to play due to the game the week after, if you catch my drift.